Dual band router?

[p.dath]

If you have an 802.11n router overting in the 2.4Gz band, and an 802.11g device, it will not force force everything down to operating on the 802.11g standard.

HOWEVER, using 802.11n channel bonding in the 2.4Ghz spectrum is almost pointless. To do channel bonding effecively you need three channels that are not used. The 2.4Ghz band only has three non-ovelapping channels, so the chance of getting all three of them being free is almost zero.

So the use of 802.11n in the 2.4Ghz spectrum for performance is not worhwhile. However "good" 802.11n devices also have MIMO, which improves your reception coverage - aka a bigger converage footprint.


802.11n in 2.4Ghz spectrum is mostly only used for domestic installations where performance isn't very important. Commercial instalations nearly always use the 5Ghz spectrum instead.

[Usarka]

Commercial instalations nearly always use the 5Ghz spectrum instead.

Rally? How do these businesses service devices that don't operate on 5Ghz like iPhone 3Gs and older laptops?

[gonzo_akl]

Rally? How do these businesses service devices that don't operate on 5Ghz like iPhone 3Gs and older laptops?

Typical business intallations will use APs with dual radios, 1 is used to cover 2.4GHz and the other the 5Ghz band. All devices capable to communicating at 5GHz use it and aren't slowed down by the legacy devices.

[p.dath]

Rally? How do these businesses service devices that don't operate on 5Ghz like iPhone 3Gs and older laptops?

You only use dual radio APs. However the use of 802.11n in the 2.4Ghz spectrum is not used for performance. If you want speed you do it in the 5Ghz spectrum.